A 2015 survey found that wireless charging accounts for a mere 20 percent of smartphone charging. Whether wireless charging is the future depends in part on emerging technologies such as magnetic resonance and radio frequency charging. Find out more in this post.

For paraplegic Adam Fritz, the thrill of the computer-assisted first steps he took five years after being paralyzed in a motorcycle crash came only after he was unhooked from the system that enabled him to walk briefly in a bioengineering lab.